mqtt stuff added

node_modules/mqtt-packet/generate.js

@@ -0,0 +1,56 @@
+'use strict'
+
+var Buffer = require('safe-buffer').Buffer
+var writeToStream = require('./writeToStream')
+var EE = require('events').EventEmitter
+var inherits = require('inherits')
+
+function generate (packet) {
+  var stream = new Accumulator()
+  writeToStream(packet, stream)
+  return stream.concat()
+}
+
+function Accumulator () {
+  this._array = new Array(20)
+  this._i = 0
+}
+
+inherits(Accumulator, EE)
+
+Accumulator.prototype.write = function (chunk) {
+  this._array[this._i++] = chunk
+  return true
+}
+
+Accumulator.prototype.concat = function () {
+  var length = 0
+  var lengths = new Array(this._array.length)
+  var list = this._array
+  var pos = 0
+  var i
+  var result
+
+  for (i = 0; i < list.length && list[i] !== undefined; i++) {
+    if (typeof list[i] !== 'string') lengths[i] = list[i].length
+    else lengths[i] = Buffer.byteLength(list[i])
+
+    length += lengths[i]
+  }
+
+  result = Buffer.allocUnsafe(length)
+
+  for (i = 0; i < list.length && list[i] !== undefined; i++) {
+    if (typeof list[i] !== 'string') {
+      list[i].copy(result, pos)
+      pos += lengths[i]
+    } else {
+      result.write(list[i], pos)
+      pos += lengths[i]
+    }
+  }
+
+  return result
+}
+
+module.exports = generate